Merge branch 'worktree-agent-a6b15d4e17dad5970'
This commit is contained in:
@@ -0,0 +1,86 @@
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/*
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* The transitions an action runs between its states — buttons, connected segments, menu items,
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* the FAB menu's trigger.
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*
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* M3 has two spring styles and they are not interchangeable: spatial moves things (position,
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* size, rotation, rounded corners) and overshoots by 9% on the way, effects changes how things
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* look (colour, opacity, elevation) and is critically damped, because a colour must never
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* overshoot — tokens/motion.css says so in the library's own words. An element whose corners and
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* colours both change on a press therefore needs two springs at once, which Tailwind cannot write
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* (`duration-*` and `ease-*` each emit one value); CSS can, by giving `transition-property` a
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* list and matching it position for position.
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*
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* `state-transition-fast` is the press/hover/select transition of a control the finger lands on:
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* shape, size and the place it sits on the fast spatial spring (a `fab` button nudges up when a
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* snackbar arrives under it), colour and elevation on the fast effects spring.
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* `state-transition-default` is the same pair one step slower, for the bigger morph of a FAB
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* turning into a close button.
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*
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* `popover-transition` is the enter and exit of a menu: M3 asks for a transition that ties the
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* list to its trigger, so it scales up from its `transform-origin` on the spatial spring while it
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* fades in on the effects one, and `allow-discrete` keeps `display` and `overlay` alive long
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* enough for the exit to be seen.
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*
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* These are `@utility` declarations, so they compile into Tailwind's utilities layer like any
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* other class: a `transition-*` utility written beside one on the call site will fight it, and
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* whichever Tailwind emits last wins. Pass neither.
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*/
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@utility state-transition-fast {
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transition-property: border-radius, padding, margin, bottom, background-color, color, box-shadow;
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transition-duration:
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var(--md-sys-motion-spatial-fast-duration), var(--md-sys-motion-spatial-fast-duration),
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var(--md-sys-motion-spatial-fast-duration), var(--md-sys-motion-spatial-fast-duration),
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var(--md-sys-motion-effects-fast-duration), var(--md-sys-motion-effects-fast-duration), var(--md-sys-motion-effects-fast-duration);
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transition-timing-function:
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var(--md-sys-motion-spatial-fast), var(--md-sys-motion-spatial-fast),
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var(--md-sys-motion-spatial-fast), var(--md-sys-motion-spatial-fast),
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var(--md-sys-motion-effects-fast), var(--md-sys-motion-effects-fast), var(--md-sys-motion-effects-fast);
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}
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@utility state-transition-default {
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transition-property: border-radius, padding, margin, background-color, color, box-shadow;
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transition-duration:
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var(--md-sys-motion-spatial-default-duration), var(--md-sys-motion-spatial-default-duration), var(--md-sys-motion-spatial-default-duration),
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var(--md-sys-motion-effects-default-duration), var(--md-sys-motion-effects-default-duration), var(--md-sys-motion-effects-default-duration);
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transition-timing-function:
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var(--md-sys-motion-spatial-default), var(--md-sys-motion-spatial-default), var(--md-sys-motion-spatial-default),
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var(--md-sys-motion-effects-default), var(--md-sys-motion-effects-default), var(--md-sys-motion-effects-default);
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}
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@utility popover-transition {
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opacity: 0;
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scale: 0.95;
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transition-property: opacity, scale, display, overlay;
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transition-duration:
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var(--md-sys-motion-effects-fast-duration), var(--md-sys-motion-spatial-fast-duration),
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var(--md-sys-motion-spatial-fast-duration), var(--md-sys-motion-spatial-fast-duration);
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transition-timing-function:
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var(--md-sys-motion-effects-fast), var(--md-sys-motion-spatial-fast), linear, linear;
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transition-behavior: allow-discrete;
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&:popover-open {
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opacity: 1;
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scale: 1;
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}
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@starting-style {
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&:popover-open {
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opacity: 0;
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scale: 0.95;
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}
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}
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}
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/*
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* A FAB menu's items rise into place as the list opens and sink back as it closes. The entry is
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* `@starting-style` on the item itself; the exit needs the state to be readable while the popover
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* is on its way out, which is what `:not(:popover-open)` is — the popover keeps `display: flex`
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* for the length of its own discrete transition, so the items have somewhere to animate to.
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*
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* Unlayered (a plain rule, not an `@utility`), so it beats the item's own utilities.
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*/
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[data-fab-menu]:not(:popover-open) > * {
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translate: 0 0.5rem;
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opacity: 0;
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}
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@@ -13,8 +13,15 @@
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* full, the inner corners small, smaller still while pressed, and a selected segment fully round
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* (ConnectedButtonGroupSmallTokens and the M3 Expressive connected button group spec).
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*
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* Split button (`<x-split-button>`): the same idea for two halves; the trailing half turns
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* round and its chevron turns over while its menu is open (SplitButton*Tokens).
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* Split button (`<x-split-button>`): the same idea for two halves, on its own corner scale —
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* SplitButton*Tokens gives the inner corner 4/4/4/8/12px at rest and *grows* it to 8/12/12/20/20px
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* under the finger, the opposite of a connected group, so `--split-inner*` is separate from
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* `--group-inner*`. The trailing half turns round and its chevron turns over while its menu is
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* open, on M3's standard scheme rather than the expressive springs (the site: "the trailing
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* button uses the standard motion scheme, not expressive, when rotating"), and the chevron sits
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* a little towards the leading half so the pair reads as one control (`--split-nudge`:
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* 1/1/2/3/6px). `--split-icon` is the trailing icon's own size, 22/22/26/38/50px, which the
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* icon-button table does not know about.
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*
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* "Full" here is half the size's height (`--group-full`), never `--md-sys-shape-corner-full`'s
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* 9999px. One element mixes full outer corners with small inner ones, and when a box's radii
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@@ -29,7 +36,7 @@
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--group-full: 1.25rem;
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}
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[data-button-group][data-size='xs'] { --group-pad: 0.75rem; --group-grow: 4px; --group-inner: var(--md-sys-shape-corner-xs); --group-inner-pressed: 2px; --group-full: 1rem; }
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[data-button-group][data-size='xs'] { --group-pad: 1rem; --group-grow: 4px; --group-inner: var(--md-sys-shape-corner-xs); --group-inner-pressed: 2px; --group-full: 1rem; }
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[data-button-group][data-size='sm'] { --group-pad: 1rem; --group-grow: 6px; --group-full: 1.25rem; }
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[data-button-group][data-size='md'] { --group-pad: 1.5rem; --group-grow: 8px; --group-full: 1.75rem; }
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[data-button-group][data-size='lg'] { --group-pad: 3rem; --group-grow: 16px; --group-inner: var(--md-sys-shape-corner-lg); --group-inner-pressed: var(--md-sys-shape-corner-md); --group-full: 3rem; }
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@@ -47,24 +54,52 @@
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padding-inline-start: calc(var(--group-pad) - var(--group-grow));
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}
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[data-button-group='split'] { --split-inner: var(--md-sys-shape-corner-xs); --split-inner-pressed: var(--md-sys-shape-corner-md); --split-icon: 22px; --split-nudge: 1px; }
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[data-button-group='split'][data-size='xs'] { --split-inner-pressed: var(--md-sys-shape-corner-sm); }
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[data-button-group='split'][data-size='md'] { --split-icon: 26px; --split-nudge: 2px; }
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[data-button-group='split'][data-size='lg'] { --split-inner: var(--md-sys-shape-corner-sm); --split-inner-pressed: var(--md-sys-shape-corner-lg-increased); --split-icon: 38px; --split-nudge: 3px; }
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[data-button-group='split'][data-size='xl'] { --split-inner: var(--md-sys-shape-corner-md); --split-inner-pressed: var(--md-sys-shape-corner-lg-increased); --split-icon: 50px; --split-nudge: 6px; }
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/*
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* A connected segment at the two smallest sizes is 32px or 40px tall, and an icon-only one is as
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* narrow as it is tall. M3 names both numbers and tells you not to reduce them: "XS and S
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* connected button groups have a 48dp target area and a 48dp minimum width". The target is the
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* `touch-target` utility on the segment itself; the width is here, where a group can reach the
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* `<x-button>`s a caller put inside it.
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*/
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[data-button-group='connected'][data-size='xs'] > *,
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[data-button-group='connected'][data-size='sm'] > * {
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min-inline-size: 3rem;
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}
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/*
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* Connected segments and split halves take their inner corner from `--group-corner`, so pressing
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* or selecting changes one variable and the rounded outer corners stay put.
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*/
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[data-button-group='connected'] > *,
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[data-split] {
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--group-corner: var(--group-inner);
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border-start-start-radius: var(--group-corner);
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border-end-start-radius: var(--group-corner);
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border-start-end-radius: var(--group-corner);
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border-end-end-radius: var(--group-corner);
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}
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[data-button-group='connected'] > :active,
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[data-split]:active {
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[data-button-group='connected'] > * {
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--group-corner: var(--group-inner);
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}
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[data-button-group='connected'] > :active {
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--group-corner: var(--group-inner-pressed);
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}
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[data-split] {
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--group-corner: var(--split-inner);
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}
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[data-split]:active {
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--group-corner: var(--split-inner-pressed);
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}
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[data-button-group='connected'] > :is([aria-pressed='true'], :has(:checked)),
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[data-split='trailing'][aria-expanded='true'] {
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--group-corner: var(--group-full);
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@@ -82,8 +117,17 @@
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border-end-end-radius: var(--group-full);
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}
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/*
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* The trailing chevron: its own size, and `--split-nudge` off centre towards the leading half —
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* equal and opposite margins move it by exactly that much inside a centred flex row, in whichever
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* direction the writing mode runs.
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*/
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[data-split='trailing'] svg {
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transition: rotate var(--md-sys-motion-spatial-fast-duration) var(--md-sys-motion-spatial-fast);
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width: var(--split-icon);
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height: var(--split-icon);
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margin-inline-start: calc(-1 * var(--split-nudge));
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margin-inline-end: var(--split-nudge);
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transition: rotate var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
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}
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[data-split='trailing'][aria-expanded='true'] svg {
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@@ -20,6 +20,7 @@
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@import './tokens/font.css';
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@import './tokens/theme.css';
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@import './tokens/state.css';
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@import './components/actions.css';
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@import './components/groups.css';
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@import './components/list.css';
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@import './components/field.css';
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